In practice, people use the term “focal length” as field of view/zoom for the final image, especially when we start talking smartphones and full-frame “equivalent” focal lengths.
I don’t disagree, the article I got this image from explains exactly what you did, but… I think the semantic ambiguity is acceptable, in this case. The actual angular field of view in a shot isn’t advertised in specifications. Neither is the sensor crop factor in post processing. It’s all kind of impractical to calculate, so using FF equivalent focal length as a “zoominess” standard people can understand makes sense.
In practice, people use the term “focal length” as field of view/zoom for the final image, especially when we start talking smartphones and full-frame “equivalent” focal lengths.
I don’t disagree, the article I got this image from explains exactly what you did, but… I think the semantic ambiguity is acceptable, in this case. The actual angular field of view in a shot isn’t advertised in specifications. Neither is the sensor crop factor in post processing. It’s all kind of impractical to calculate, so using FF equivalent focal length as a “zoominess” standard people can understand makes sense.